Trusted by 2M+ users worldwide

The fastest way to put a PNG on a PDF.

Add transparent logos, signatures, stamps, watermarks or full PNG pages to any PDF — and convert in any direction. 100% free, 100% private, runs entirely in your browser.

Convert PNG to PDF Add PNG to existing PDF

No upload
No signup
No watermark
Unlimited use
Works offline

Files never leave your device

Works fully offline (PWA)

Open standards, no lock-in

Every PNG & PDF tool you need

Battle-tested tools for converting, editing, signing and organizing — built for speed and privacy.

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Popular

PDF to PNG

Extract every page as a PNG image

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New

Add PNG to PDF

Place logo, signature or stamp on PDF

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Why people choose PNG on PDF

Privacy by design

Every conversion happens locally with WebAssembly. Your files never touch our servers — and there are no servers to touch.

Blazing fast

Optimised pdf-lib + pdfjs pipeline + smart canvas re-encoding. A 200-image batch finishes in seconds.

Mobile-first design

Big tap targets, drag-and-drop, gesture-friendly previews, and a PWA you can install on the home screen.

Offline ready

After your first visit, every tool works without internet. Great for sensitive documents on the go.

Zero account, zero limits

No signup, no email capture, no daily quotas, no watermarks added to your output. Forever free.

Open standards

Outputs valid PDF 1.7, PDF/A-compatible documents and ISO-standard PNGs that work everywhere.

How it works

Drop your files

Drag a PNG onto a PDF, or pick multiple PNGs to combine into one PDF. We support PNG, JPG, WebP and HEIC inputs.

Tweak the result

Choose page size, orientation, margins, fit and background. For overlays, drag to position and use the live preview.

Download instantly

Save a single PDF, a ZIP of pages, or a high-resolution PNG. No queues, no upload bars — just instant download.

Innovative

Features you won’t find on other free tools

PNG-aware Auto-Fit

Detects the image’s real content bounds and fits it to the PDF margins so signatures and logos always land where you expect.

Live multi-page preview

Scroll, zoom and skim every PDF page client-side at 60 fps — even on a low-end Android phone.

Background remover, no AI cost

A custom edge-aware color-match algorithm makes any solid background transparent in milliseconds — no cloud, no fee.

Embed QR codes into PDFs

Generate a QR for a URL, vCard or Wi-Fi credentials and stamp it on every page. Rare on free tools.

Batch ZIP export

Convert hundreds of pages to PNG/JPG and download a single ZIP — no per-file clicks needed.

On-device OCR

Tesseract.js extracts text from scanned PDFs locally — sensitive docs never need to be uploaded to a server.

PNG on PDF vs typical free PDF sites

Feature

PNG on PDF

Typical sites

Files leave your device

No, never

Almost always uploaded

Daily conversion limits

Unlimited

2–5 / day

Adds watermark to output

Never

Common on free tier

Works offline

Yes (PWA)

Account required

Often required

Built-in OCR

Yes, on-device

Paid only

Background remover

Yes

Rare

Loved by 2M+ users

“Finally a free tool that doesn’t stamp a watermark on my client deliverables. Adding logos to PDFs takes me 10 seconds now.”

Maya R. — Freelance designer

“I batch-sign 30 invoices a week with my PNG signature. It’s faster than DocuSign and free.”

David L. — Small business owner

“Combined 80 lecture screenshots into a single PDF on my phone in under a minute. No app install.”

Aisha K. — Student

Frequently asked questions

Is PNG on PDF really free and unlimited?+

Yes. Every tool on PNG on PDF is 100% free, with no signup, no daily limits and no watermarks. Because all processing happens in your browser, we have no per-conversion costs to pass on to you.

Are my files uploaded to a server?+

No. Your PNGs and PDFs never leave your device. All conversion, editing and signing is performed locally with WebAssembly and Canvas. You can disconnect from the internet after the page loads and the tools will still work.

How do I add a PNG to an existing PDF?+

Open “Add PNG to PDF”, drop your PDF, then drop a transparent PNG. Drag it to the position you want, resize, set opacity and rotation, choose which pages to apply it to, and click Save. Perfect for logos, signatures and stamps.

What is the maximum file size?+

There is no hard limit — only your device’s memory. We have tested PDFs up to 500 MB and image batches of 200+ files on modern phones and laptops.

Does PNG on PDF work on iPhone, Android, Mac and Windows?+

Yes. The site is a Progressive Web App. You can install it from your browser on iOS, Android, macOS, Windows, Chromebook and Linux for an app-like, offline experience.

Do you keep logs of what I convert?+

No. Since files are processed locally, we have nothing to log. We use only privacy-friendly, non-tracking analytics for aggregate page views.

Can I use the converted files commercially?+

Yes. You retain full rights to anything you process here. We do not claim any ownership over your files or output.

Ready to put a PNG on a PDF?

No upload, no signup, no nonsense. Open a tool and you’re done in seconds.

Add PNG to PDF Convert PNG to PDF